non extendable api usages solved

Author: abhiraj2

src/main/java/com/couchbase/intellij/tree/RelationshipSettingsManager.java

@@ -58,12 +58,8 @@ public static void showExportDialog(Project project) {
     }
 
     public static void showImportDialog(Project project, Tree tree) {
-        FileChooserDescriptor fcd = new FileChooserDescriptor(true, false, false, false, false, false) {
-            @Override
-            public boolean isFileSelectable(VirtualFile file) {
-                return file != null && !file.isDirectory() && "properties".equals(file.getExtension());
-            }
-        };
+        FileChooserDescriptor fcd = new FileChooserDescriptor(true, false, false, false, false, false)
+                .withFileFilter(file -> file != null && !file.isDirectory() && "properties".equals(file.getExtension()));
         fcd.setTitle("Select Relationship File");
         fcd.setDescription("Choose a .properties file:");
 

src/main/java/com/couchbase/intellij/tree/cblite/CBLCreateDatabaseDialog.java

@@ -103,16 +103,13 @@ protected JComponent createCenterPanel() {
         gbc.gridy = 2;
         gbc.weightx = 0.6;
         databasePathField = new TextFieldWithBrowseButton();
+        FileChooserDescriptor descriptor = new FileChooserDescriptor(false, true, false, false, false, false)
+                .withFileFilter(file -> true);
         databasePathField.addBrowseFolderListener(
                 "Select the database location",
                 "Choose a folder",
                 project,
-                new FileChooserDescriptor(false, true, false, false, false, false) {
-                    @Override
-                    public boolean isFileSelectable(VirtualFile file) {
-                        return true;
-                    }
-                }
+                descriptor
         );
 
         panel.add(databasePathField, gbc);

src/main/java/com/couchbase/intellij/tree/cblite/ImportCBLDatabaseDialog.java

@@ -80,17 +80,16 @@ protected JComponent createCenterPanel() {
         gbc.gridy = 1;
         gbc.weightx = 0.6;
         databasePathField = new TextFieldWithBrowseButton();
+        FileChooserDescriptor descriptor = new FileChooserDescriptor(false, true, false, false, false, false)
+                .withFileFilter(file -> {
+                    String name = file.getName();
+                    return name.endsWith(".cblite2") || name.endsWith(".cblite3");
+                });
         databasePathField.addBrowseFolderListener(
                 "Select the database location",
                 "Choose a .cblite2 or .cblite3 folder",
                 project,
-                new FileChooserDescriptor(false, true, false, false, false, false) {
-                    @Override
-                    public boolean isFileSelectable(VirtualFile file) {
-                        String name = file.getName();
-                        return name.endsWith(".cblite2") || name.endsWith(".cblite3");
-                    }
-                }
+                descriptor
         );
 
         panel.add(databasePathField,  gbc);

src/main/java/com/couchbase/intellij/tree/cblite/dialog/CBLAttachBlobDialog.java

@@ -126,18 +126,19 @@ protected JComponent createCenterPanel() {
         panel.add(errorLabel, constraints);
 
 
-        fileField.addBrowseFolderListener("Select File", null, project,
-                new FileChooserDescriptor(true, false, false, false, false, false) {
-                    @Override
-                    public boolean isFileSelectable(VirtualFile file) {
-                        if (file.isDirectory()) {
-                            return true;
-                        }
-                        FileType selectedFileType = (FileType) fileTypeComboBox.getSelectedItem();
-                        String[] extensions = Objects.requireNonNull(selectedFileType).getExtension().split("\\|");
-                        return Arrays.asList(extensions).contains(file.getExtension());
+        FileChooserDescriptor descriptor = new FileChooserDescriptor(true, false, false, false, false, false)
+                .withFileFilter(file -> {
+                    if (file.isDirectory()) {
+                        return true;
                     }
+                    FileType selectedFileType = (FileType) fileTypeComboBox.getSelectedItem();
+                    if (selectedFileType == null) {
+                        return false;
+                    }
+                    String[] extensions = selectedFileType.getExtension().split("\\|");
+                    return Arrays.asList(extensions).contains(file.getExtension());
                 });
+        fileField.addBrowseFolderListener("Select File", null, project, descriptor);
 
 
         return panel;

src/main/java/com/couchbase/intellij/tree/cblite/dialog/CBLImportDialog.java

@@ -250,12 +250,9 @@ private void previousPage() {
 
     private void addListeners() {
 
-        datasetField.addBrowseFolderListener("Select a File", "Please select a JSON file", null, new FileChooserDescriptor(true, false, false, false, false, false) {
-            @Override
-            public boolean isFileSelectable(VirtualFile file) {
-                return "json".equalsIgnoreCase(file.getExtension());
-            }
-        });
+        FileChooserDescriptor descriptor = new FileChooserDescriptor(true, false, false, false, false, false)
+                .withFileFilter(file -> "json".equalsIgnoreCase(file.getExtension()));
+        datasetField.addBrowseFolderListener("Select a File", "Please select a JSON file", null, descriptor);
 
         datasetField.getTextField().getDocument().addDocumentListener(new DocumentAdapter() {
             @Override